Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
A mild drop in Clarksville's average high-temperature is observed in September, transitioning from a hot 93.9°F (34.4°C) in August to a still tropical 87.4°F (30.8°C). September nights in Clarksville are marked by an average low-temperature of 66.9°F (19.4°C).Heat index
September's mean heat index is calculated to be a torrid 96.8°F (36°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.
Humidity
In September, the average relative humidity is 68%.Rainfall
In Clarksville, during September, the rain falls for 11.8 days and regularly aggregates up to 2.4" (61mm) of precipitation. In Clarksville, Texas, during the entire year, the rain falls for 149.4 days and collects up to 38.15" (969mm) of precipitation.Snowfall
In Clarksville, Texas, snow does not fall in April through November.Daylight
In Clarksville, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:45 pm. On the last day of September, in Clarksville, sunrise is at 7:14 am and sunset at 7:05 pm CDT.
Sunshine
The average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index in Clarksville, Texas, is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 6 during September morphs into the following directions:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
How hot does it get in Clarksville in September?
What is the average humidity in September in Clarksville?
How many days does it rain in September in Clarksville?
When it does not snow in Clarksville?
What is the average length of the day in September in Clarksville?
When is the sunrise / sunset in September in Clarksville?
How many hours of sunshine does Clarksville have in September?
How high is the UV index in September in Clarksville?
Average temperature in September
Clarksville, TX
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is August (93.9°F).
The month with the lowest average high temperature is January (52.2°F).
- Average low temperature in September: 66.9°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (36.5°F).
Average pressure in September
Clarksville, TX
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Clarksville, TX
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Clarksville, TX
- Average humidity in September: 68%
The months with the highest relative humidity are February and May (78%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
Clarksville, TX
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is January (2.32").
Average rainfall days in September
Clarksville, TX
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is March (14.7 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in September
Clarksville, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.75").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Clarksville, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Clarksville, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Clarksville, TX
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is January (18.8 days).
The month with the least sunshine days is February (13.6 days).
Average UV index in September
Clarksville, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Clarksville, TX
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Clarksville, TX
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Clarksville, Texas, USA
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